Cairo Recoverable Errors

Overview

Show how to model recoverable failures with Result<T, E> and handle them safely.

Quick Use

• •Read references/recoverable-errors.md before answering.
• •Prefer match or ? over unwrap in non-test code.
• •Mention expect when a custom panic message is desired.

Response Checklist

• •Return Result<T, E> from fallible functions.
• •Use Ok(...) and Err(...) explicitly.
• •Apply ? to propagate errors from called functions.

Example Requests

• •"How do I use Result in Cairo?"
• •"What is the difference between unwrap and expect?"
• •"How does the ? operator work?"

Cairo by Example

• •Option & unwrap
• •Unpacking options with ?
• •Combinators: map
• •Combinators: and_then
• •Result
• •Introducing ?
• •Multiple error types
• •Core Result